arithmetic operators

how to display only the varible of $sumtotal in the following:

(Variables on right of = have a loop that gives an assigned numerical value to each varible)

this is what was tried, but it does not display


$sumtotal <code=perl> $sumtotal=($sum+$sumram+sumdj+$sumtg+sumtp); out $sumtotal </perl>


following is complete code from page
http://baseportal.com/cgi-bin/baseportal.pl?htx=/searsdvdtech/RM_Copy



<i> Completes</i> <br>





<loop db^=PRODUCTION Name==RM sort=- date==now code=perl>; $sum+=$_loop{Complete}; </loop>

RM =$sum



<loop db^=PRODUCTION Name==RAM sort=- date==now code=perl>; $sumram+=$_loop{Complete}; </loop>

RAM =$sumram




<loop db^=PRODUCTION Name==DJ sort=- date==now code=perl>; $sumdj+=$_loop{Complete}; </loop>DJ =$sumdj




<loop db^=PRODUCTION Name==TP sort=- date==now code=perl>; $sumtp+=$_loop{Complete}; </loop>TP =$sumtp




<loop db^=PRODUCTION Name==TG sort=- date==now code=perl>; $sumtg+=$_loop{Complete}; </loop>TG =$sumtg





<code=perl> $sumtotal=($sum+$sumram+sumdj+$sumtg+sumtp); out $sumtotal </perl>